The Cubs won't back down in their efforts to land Cuban outfielder Rusney Castillo.

DENVER -- The Chicago Cubs still face competition but have the resources to contend for Cuban free agent outfielder Rusney Castillo.

A team source confirmed the Cubs conducted a private workout Wednesday for the 5-foot-9, 185-pound Castillo at Wrigley Field. The Cubs sent five scouts to watch Castillo, 27, during a workout in Miami on July 26 that was attended by representatives for virtually every major league team.

Castillo has drawn comparisons to the New York Yankees' Brett Gardner with more power, and he's perceived as a free agent who could accelerate to the majors quickly. The Yankees and Phillies are among several teams reportedly interested in Castillo.

Castillo is represented by Roc Nation Sports, a joint venture between Jay Z's Roc Nation and CAA Sports. There are no financial restrictions on teams interested in signing Castillo.